Cistern for water-closets.



UNITED STATES PAUL scheme,

PATENT OFFICE.

OF BERLIN, GERMANY, ASSIGNOR OF ONE-HALF TO GUSTAV STEIN, SAME PLACE:

CISTERN FOR WATER-CLOSETS.

SPECIFICATION formingpart of Letters Patent No. 678,843, dated July 16, 1901. Application filed January 8, 1901. Serial No. 42 ,5 76. (N model.)

To all whom it may concern.-

Be it known that 1, PAUL SOHURIG, a subject of the Emperor of Germany, residing at Berlin, Empire of Germany, have invented certain new and useful Improvements in Cisterns for Water-Closets, of which the following is a description.

My invention relates to cisterns for waterclosets; and it consists in the arrangement of an air-inlet pipe which normally dips with one end in the water of the cistern and is connected at the other end to the upper part of the main water-float and which is rigidly connected to and supported by a secondary water-float. This float is arranged in a receptacle provided in the cistern and having a small opening near the bottom, so. that the water of the cistern may enter into the said receptacle.

One object of my invention is toprovide a cistern from which only a predetermined measured quantity of water may flow out irrespective of the water-level in the cistern, which depends, as is well known, on the pressure in the water-conduit.

A further object of my invention is to enable the cistern to be entirely emptied, it dosired-for instance, for cleaning the closet.

In the accompanying drawings, Figure 1 represents a vertical section of the improved cistern, showing the parts at rest. Fig. 2 is a similar section of the cistern, showing the parts after the main water-float has been drawn down, so thatthe water may flow into the flush-pipe. Fig. 3 represents a vertical section similar to that of Fig. 1, showing the parts in the position which they occupy when the flushing has been stopped automatically. Fig. 4 is a plan view of the apparatus, and Fig. 5 a cross-sectionon line A B, Fig. 4.

The cistern is filled with water by an inletpipe, which is automatically closed by means of a cock controlled in a well-known manner by the rising of the water-level.

a is a cistern provided at the bottom with an opening, in which is tightly fixed a receptacle b. The bottom of this receptacle lies below the bottom of the said cistern. The upper part of the receptacle extends into the cistern a and is perforated, so that the water contained in the latter may enter into the receptacle b.

c is a flush-pipe centrally arranged in the receptacle 1) and leading to the closet.

(1 represents the main float, which is guided on the flush-pipe c by means of its tubular guideway f and arranged in a belle. This hell 6 is fixed on the float din such a manner that between it and the outer surface of the,

float d is left an air-space. The upper part of the bell e is tapered, while the walls at the lower part extendvertically downward and fit loosely in the receptacle b, so that the water from the cistern a may flow between the walls of the bell e and the receptacle b. The lower edge of the bell e is recessed for enabling a free entrance of the water into the interior of the said bell e. The receptacle 1) as well as'the bell e are of elliptic cross-section in order to leave as much room as pos sible in the cistern or.

Above the guideway f of the float d is se cured to the bell e an elbow-pipe g, the free end of which is connected by a flexible tube r h with the pipe 1'. The latter is fixed to a support carried by a perforated pipe l0 and dips normally into the water of the cistern (1, so that a water seal is obtained which prevents the air from entering into the pipe 1;. l is a secondary float secured to the lower end of said pipe is and adapted to move up and down within a receptacle m. This receptacle m is arranged in the cistern a and is provided near the bottom with a small opening a, so that the water of the cistern 0. may enter the receptacle m.

The floatZ is guided by a pipe 0, extending upward from the bottom of the receptacle m and having its upper end above the waterlevel, so that the watermay not enter into the same. To the upper closed end of the pipe is is fixed a chain p or the like, which extends downwardly through the pipes 70 and 0 and may be fixed within the reach of an attendant. When the'water flows into the cistern a, the main float d and the secondary float I will 'rise until the water-inlet pipe is closed, at which moment the floats will be in the positions shown in Fig. 1. The water within the space between the bell e and the float (1 will be about the same level as in the cistern a and the receptacle 'm. If the,

way f. (See Fig. 2.) By this suction the wa 1o ter from the cistern is drawn through the holes of the receptacle i) into the latter and entering the bell e flows over the upper end of the float d into the flush-pipe o. .This flowing is interrupted as soon. as the waterlevel in cistern Ct has sunk below the lower end of the pipe t, Fig. 3, which willtake place at a certain predeterminable moment, because the water in the receptacle m cannot flow out through the hole 01 into the cistern so quickly as it flows out through the pipe 0. Thus the float Z will not sink so quickly as the Waterlevel in cistern 0,, owing to the fact that the water-level in the cistern a has sunk more quickly than in m, and consequently the float l retains the end of the pipe 1; above the waterlevel in cistern a, allowing air to enter the said pipe, and when the pipe 1' reaches the position shown in Fig. 3 air may enter the same and will pass by suction through the tube h and pipe 9 into the interior of the bell 6. By means of this the outflow of the water is interrupted. Since now no further suction can take place in f, the water will lift the float d to the position Fig. 3. While the level of water is sinking the water-inlet pipe is opened in the well-known manner and the cistern a will be filled again, whereby the floats d and ,Z regain their normal position, Fig. 1. If a greater quantity than the ordinary quantity for flushing should be used which maybe necessary for cleaning the closet,theat tendant after having depressed the belle will pull the float Z downward by means of chain 19, so that the lower end of the pipe 11 will "nearly reach the bottom of the cistern a. It is therefore evident that the water will then flow out until the level has sunk beneath the end of this pipe, so that the basin will be practically emptied.

" Since no levers are necessary in connection with my improved cistern, I am enabled to make all parts of zinc or tinned copper, thus preventing the formation of rust. It is obvious that I could connect the chains or the like, by means of which the belle is depressed, 'to the movable seat of the water-closet, so that the flushing will be automatically effected, without departing from my invention.

I claim as my invention-- 1. In combination with a cistern for waterclosets, a bell dipping into the water in the cistern, a float connected with the bell, means for depressing the bell to discharge'the water from the cistern, a movable air-pipe dipping into the cistern-water, a connection between the said air-pipe and the bell whereby the said bell will be supplied with air from said airpipe when the cistern-water falls below the end of the said air-pipe, a float connected with the air-pipe and a receptacle for containing water and having a small outlet which will cause the water-level in said receptacle to fall slowly as compared with the fall of water in the cistern, substantially as described.

2. In combination with a cistern for waterclosets, a bell dipping into the water in the cistern, a float connectedwith the bell, means for depressing the bell to discharge the water from the cistern, a movable air-pipe dipping into the cistern-water, a connection between the said air-pipe and the bell whereby the said bell will be supplied with air from said airpipe when the cistern-water falls below the end of the said air-pipe, a float connected with the air-pipe and a receptacle for containing water and having a small outlet which will cause the water-level in said receptacle to fall slowly as compared with the fall of water in the cistern, the said connection between the air-pipe and bell beinga flexible one whereby the bell may fall at a greater speed than the air-pipe and the outlet from said receptacle leading into thecisr-ern ,substantialiy as described. a

3. In combination with a cistern for waterclosets an ai r-inlet pipe the lower end of which dips normally into the water of a cistern, a bell supported by a main float, pipe connec tionbetween that bell and pipe, a secondary float rigidly secured to the latter, a receptacle within the cistern havinga small opening near the bottom, and adapted toguide the said secondary float, and means by which the latter may be depressed, substantially as described.

4. In combination with a cistern for waterclosets an air-inlet pipe,the lower end of which dips normally into thewater of a cistern, a bell supported by a main float, a space between the outer wall of the latter and the bell, a pipe secured to the upper end of the bell and connected with the said air-inlet pipe, means for depressing the bell, a secondary float rigidly secured to said air-inlet pipe a receptacle within the system having a small opening near the bottom and adapted to guide the said secondary float and means by which the latter may be depressed, substantially as described. H 5

In witness whereof I have hereunto set my hand in presencefot' two witnesses.

; PAUL SOHURIG.

Witnesses: Y

WOLDEMAR 'HAUPT, HENRY I-IAsPER. 

